Injection pen casing



FIG. 1 is a perspective of an injection pen casing from a front direction, showing our new design;

FIG. 2 is a perspective from a top direction;

FIG. 3 is a perspective from a bottom direction;

FIG. 4 is a front view of FIG. 1, the rear view being symmetrical;

FIG. 5 is a left side view of FIG. 1, the right side being symmetrical;

FIG. 6 is a further perspective of FIG. 1 with additional detail; and,

FIG. 7 is a perspective of FIG. 3 with additional detail.

The broken lines show portions of the design that form no part of the claimed design. 

CLAIM The ornamental design for an injection pen casing, as shown and described. 